Chris, just like you said, I floor tiller till they look about right and feel equal, then I put on a long string and double check tiller then go for a minimum 4" or 5" brace height. From that point the scale come in handy, I start going down 1" at a time several pulls at each increment as soon as I detect the slightest drop in weight I start adjusting tiller and don't go past that point till I feel tiller is about perfect. The last few inches it is really hard not to loose a little bit but 3# of weight is equal to about 1" reflex or less.